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| DIY Club Faqs |
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RISING DAMP. I live in a rented full brick house. The damp course appears to have gone and with the extended wet weather (days at a time) and the clay soil, water has crept up the internal walls, even those in the middle of the house.
The landlord doesn't want to replace the damp course and I don't want to move. The paint is peeling off come walls and the others have a reddish crusty residue. Under the paint appears to be the original plaster. It is a pinkish colour. I was wondering if anyone if I could bag the walls in such a situation and perhaps add a waterproofer such ad Silasic to the mixture. Has anyone had any success with such a method?
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I deal with quite a few building with rising damp and I would steer clear of trying to seal the wall with a Silasic waterproofer or any another material that holds moisture in, all you will do is drive the moisture further up the walls, trust me there are no quick or cheap or easy rising damp solutions if there was some one would be very rich!!!. If you leave the walls and try and bag them, the bagging will eventually drop off especially if you just apply it to the older plaster. The only way to stop the moisture is with a new DPC either cut in (the preferred way) or an injected DPC. Then once the new DPC is in place you need to remove the old plaster finishes (assuming the building is not heritage listed ) and the paint and apply a sacrificial render to draw out the salts and moisture in the walls (generally in the worst spots) or just let the walls dry naturally and brush of the salts off, this will take some time.
Having said all that there is a paint product call Kiem which is a mineral paint and has been around for about 115 years, and is very popular in Europe not so much in Australia but it is available and thank fully catching on. The paint is a liquid silicate paint combining a potassium silicate binder with inorganic fillers and natural earth oxide colour pigments to produce a paint which penetrates into the substrate forming a chemical crystalline bond with it to become an integral part of the surface. The paint is algae and mould-resistant, pollution resistant and low maintenance (20 - 30 years). The paint breaths unlike acrylic paints, eg it lets water vapour through but not water like driven rain. You are properly think why is he telling me all this?, well if noone wants to fix the rising damp because of the cost and you want to live in a nice rented house without the paint peel off, this one product that will hang on with the rising damp and shouldn't peel, but remember it wont fix the rising damp it is only cosmetic.
There is also a Bio stripper made by Keim which is bio degradable and is not caustic to the skin, so its very environmentally friendly, but boy it stinks when you use it.
Keim is the only paint I will use on painted masonry structures or heritage building, the catch is it is more expensive then other paints but you get what you pay for.
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